|
National Bureau of Economic Research (United States)
6
|
Center for Energy and Environmental Policy Research (United States)
3
|
Fondazione Eni Enrico Mattei (Italy)
3
|
|
Centre for Economic Policy Research (United Kingdom)
2
|
Brookings Institution (United States)
1
|
Centre for Energy Policy and Economics (Switzerland)
1
|
|
Centro Euro-Mediterraneo sui Cambiamenti Climatici (Italy)
1
|
Urban Institute (United States)
1
|
